Understanding the structural disorder of (AgxCu1-x)2ZnSnSe4 based kesterite semiconductor by neutron diffraction study

Simple item page
dc.contributor.authorQuadir, Sen_AU
dc.contributor.authorChen, CYen_AU
dc.contributor.authorKuei-Kuan, Wen_AU
dc.contributor.authorWang, CWen_AU
dc.contributor.authorWei-Tin, Cen_AU
dc.contributor.authorWu, CMen_AU
dc.contributor.authorYano, SIen_AU
dc.contributor.authorChen, KHen_AU
dc.contributor.authorChen, LCen_AU
dc.date.accessioned2023-05-05T04:08:24Zen_AU
dc.date.available2023-05-05T04:08:24Zen_AU
dc.date.issued2020-11-11en_AU
dc.date.statistics2023-05-02en_AU
dc.description.abstractThe quaternary semiconductor Cu2ZnSnSe4 (CZTSe) is a promising environment-friendly and low-cost material as a solar cell absorber layer with a power conversion efficiency of 11.6%. Its photovoltaic performance is currently limited due to its disorder between the Copper & Zinc lattice sites, which creates band tailing and creates voltage deficit. By replacing Cu in CZTSe with isovalent Ag, whose ionic radius is larger than that of Cu and Zn, the density of I–II antisite defects could be suppressed. This work has been done to quantify the cation disorders on all cation symmetry sites and the effect of substitution of Ag in the CZTSe crystal structure. (AgxCu1-x)2ZnSnSe4 (A/CZTSe) samples with different compositions were synthesized by a solidstate reaction of the pure element in an evacuated quartz tube. Structural analysis of stoichiometric & offstoichiometric samples were performed using Raman and synchrotron powder diffraction including Rietveld refinement. A neutron diffraction experiment is performed to fully understand the cation distribution analysis in A/CZTSe powder sample as Cu+ and Zn2+ are not distinguishable using conventional X-ray diffraction method due to their isoelectronic character but there is a significant difference in their neutron scattering length (bCu = 7.718 fm, bZn = 5.680 fm). It is found that powder A/CZTSe adopts the kesterite type structure with a partial disorder of copper and zinc on the two Wyckoff position 2c and 2d. Sn has been found on Wyckoff position 2b (0, 0, ½ ), whereas Cu/Zn is located on 2a (0, 0, 0), 2c (0, ½ , 1/4) and 2d (0, ½ , ¾ ) sites. There is a presence of copper vacancies (VCu), various cation anti-site defects (CuZn, ZnCu, ZnSn, and SnZn) have been found for different compositions. This work will also answer the effectiveness of Ag as a substitution of Cu in kesterite based CZTSe, to suppress anti-site disorder. © The authors.en_AU
dc.identifier.citationQuadir, S., Chen., C.-Y., Kuei-Kuan, W., Wang, C.-W., Wei-Tin, C., Wu, C.-M., Yano, S.-I., Chen, K.-H., & Chen, L.-C. (2020). Understanding the structural disorder of (AgxCu1-x)2ZnSnSe4 based kesterite semiconductor by neutron diffraction study. Poster presented to the ANBUG-AINSE Neutron Scattering Symposium, AANSS 2020, Virtual Meeting, 11th - 13th November 2020, (pp. 105). Retrieved from: https://events01.synchrotron.org.au/event/125/attachments/725/1149/AANSS_Abstract_Booklet_Complete_-_1_Page_Reduced.pdfen_AU
dc.identifier.conferenceenddate13 November 2020en_AU
dc.identifier.conferencenameANBUG-AINSE Neutron Scattering Symposium, AANSS 2020en_AU
dc.identifier.conferenceplaceVirtual Meetingen_AU
dc.identifier.conferencestartdate11 November 2020en_AU
dc.identifier.pagination105en_AU
dc.identifier.urihttps://events01.synchrotron.org.au/event/125/contributions/3717/contribution.pdfen_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/15018en_AU
dc.language.isoenen_AU
dc.publisherAustralian Institute of Nuclear Science and Engineering (AINSE)en_AU
dc.subjectCopperen_AU
dc.subjectPowersen_AU
dc.subjectConversionen_AU
dc.subjectZincen_AU
dc.subjectElectric potentialen_AU
dc.subjectCrystal structureen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectSynchrotronsen_AU
dc.subjectX-ray diffractionen_AU
dc.subjectScatteringen_AU
dc.titleUnderstanding the structural disorder of (AgxCu1-x)2ZnSnSe4 based kesterite semiconductor by neutron diffraction studyen_AU
dc.typeConference Abstracten_AU
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
contribution (54).pdf
Size:
39.78 KB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.63 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Conference Publications